org.apache.commons.io.filefilter

Class FileFileFilter

  • All Implemented Interfaces:
    FileFilter, FilenameFilter, Serializable, FileVisitor< Path>, PathFilter, PathVisitor, IOFileFilter 

    public class FileFileFilter
extends AbstractFileFilter
implements Serializable
    This filter accepts Files that are files (not directories).

    For example, here is how to print out a list of the real files within the current directory:

    Using Classic IO

     File dir = new File(".");
 String[] files = dir.list(FileFileFilter.INSTANCE);
 for (String file : files) {
     System.out.println(file);
 }

    Using NIO

     final Path dir = Paths.get("");
 final AccumulatorPathVisitor visitor = AccumulatorPathVisitor.withLongCounters(FileFileFilter.INSTANCE);
 //
 // Walk one dir
 Files.walkFileTree(dir, Collections.emptySet(), 1, visitor);
 System.out.println(visitor.getPathCounters());
 System.out.println(visitor.getFileList());
 //
 visitor.getPathCounters().reset();
 //
 // Walk dir tree
 Files.walkFileTree(dir, visitor);
 System.out.println(visitor.getPathCounters());
 System.out.println(visitor.getDirList());
 System.out.println(visitor.getFileList());
    Since:
    1.3
    See Also:
    FileFilterUtils.fileFileFilter(), Serialized Form

    • Field Detail

      • INSTANCE

        public static final IOFileFilter INSTANCE
        Singleton instance of file filter.
        Since:
        2.9.0

    • Constructor Detail

      • FileFileFilter

        protected FileFileFilter()
        Restrictive constructor.

    • Method Detail

      • accept

        public FileVisitResult accept(Path file,
                              BasicFileAttributes attributes)
        Checks to see if the file is a file.
        Specified by:
        accept in interface  PathFilter
        Specified by:
        accept in interface  IOFileFilter
        Parameters:
        file - the File to check
        attributes - the file's basic attributes (TODO may be null).
        Returns:
        true if the file is a file
        Since:
        2.9.0

Copyright © 2002–2021 The Apache Software Foundation. All rights reserved.

Group Id commons-io
Artifact Id commons-io
Version 2.11.0
Last Release 2.11.0
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Last Updated 2021-07-09